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Advanced Materials

H-TiO2@MnO2//H-TiO2@C Core–Shell Nanowires for High Performance and Flexible Asymmetric Supercapacitors

Authors

  • Xihong Lu,

    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
    2. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
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  • Minghao Yu,

    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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  • Gongming Wang,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
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  • Teng Zhai,

    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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  • Shilei Xie,

    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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  • Yichuan Ling,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
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  • Yexiang Tong,

    Corresponding author
    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
    • KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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  • Yat Li

    Corresponding author
    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
    • Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA.
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Abstract

A flexible solid-state asymmetric supercapacitor device with H-TiO2@MnO2 core–shell NWs as the positive electrode and H-TiO2@C core–shell NWs as the negative electrode is developed. This device operates in a 1.8 V voltage window and is able to deliver a high specific capacitance of 139.6 F g−1 and maximum volumetric energy density of 0.30 mWh cm−3 with excellent cycling performance and good flexibility.

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